EP 0217628 B1 19911009 - INTERPOLATION FILTER WITH MOTION COMPENSATION
Title (en)
INTERPOLATION FILTER WITH MOTION COMPENSATION
Publication
Application
Priority
US 78094485 A 19850927
Abstract (en)
[origin: EP0217628A2] A video signal interpolation includes a frame interpolation filter (402) which generates from a video input signal (Y) by interpolation from corresponding elements of immediately preceding and following fields, a frame interpolated output signal tending to exhibit motion artefacts. A second filter (430) provides a line interpolated signal having picture elements spatially and temporally coincident with corresponding elements of the frame interpolated signal and having a suppressed vertical detail component. A third filter (440) attenuates the vertical detail component of the frame interpolated signal. An output circuit (461, 450) combines the signals of the three filters to provide a frame interpolated video output signal (Yi) in which the vertical resolution of the video input signal (Yd) is preserved and motion artefacts characteristic of frame interpolation are atteruated. The interpolator of the invention is particularly suitable for providing the required interpolated video signal in progressive scan display systems in which a delayed and time-compressed video signal derived from a video input signal is displayed line-by-line alternatingly with an interpolated video signal obtained by interpolation from the input signal.
IPC 1-7
IPC 8 full level
H04N 7/01 (2006.01); H04N 5/14 (2006.01); H04N 5/208 (2006.01); H04N 5/44 (2006.01); H04N 9/68 (2006.01)
CPC (source: EP KR US)
H04N 7/01 (2013.01 - KR); H04N 7/012 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0217628 A2 19870408; EP 0217628 A3 19880803; EP 0217628 B1 19911009; CA 1257378 A 19890711; DE 3681868 D1 19911114; HK 189296 A 19961018; JP H0783468 B2 19950906; JP S6281888 A 19870415; KR 870003654 A 19870418; KR 950002659 B1 19950324; SG 138194 G 19950113; US 4677483 A 19870630
DOCDB simple family (application)
EP 86307336 A 19860924; CA 518871 A 19860923; DE 3681868 T 19860924; HK 189296 A 19961010; JP 22795286 A 19860925; KR 860008058 A 19860926; SG 138194 A 19940927; US 78094485 A 19850927